Improvement in clamps for carpenters and cabinet-makers



W. H'ECKERT. CLAMPS FOR CARPENTERS AND CABINET MAKERS.

No. 193,951. Patehtd Aug. 7,1877.v

E" 1% j X v v A =a Fig.3

Fi 4. Fig. 5. Fig. 6. Fig. 7.

WITNESSES INVENTOR.

UNITED STATES WILLIAM HECKERT, OF PROVIDENCE, RHODE ISLAND.

IMPROVEMENT IN CLAMPS FOR CARPENTERS AND CABINET-MAKERS.

Specification forming part of Letters Patent No. 193,951, dated August 7, 1877; application filed January 2, 1877.

To all whom it may concern:

Be it known that I, WILLIAM HEOKERT, of the city of Providence, in the county of Providence and State of Rhode Island, have -invented certain new and useful Improvements in Clamps; and I do hereby declare that the following is afull, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

The object of this invention is to produce a compact, cheap, and portable clamp for. the use of carpenters, cabinet-makers, and others in gluing, holding, and clamping together a large variety of work.

The construction is so simple that it will be readily comprehended by reference to the drawings, in which- Figure l is a side elevation of my improved clamp. Fig. 2 is a plan of the stationary jaw. Fig. 3 is a plan of the moving'jaw" and bed. Figs. 4, 5, and 6 are front and side elevations of the stationary nut in which the screw of the clamp works. Fig. 7 is a section of bedplate, taken on line X X of Fig. 3.

In Figs. 1, 2, and 4, E represents an angleplate, which may be made to any length desired. On one of its plane sides one or more pins, E, are cast, having a projection or flange on their ends. When in use the said flanges are pressed into or under the wood, thereby preventing the angle-plate from lifting.

In Fig. 6, D represents a nut, which has also formed upon it one or more pins, D, having projections or flanges on the ends. B is a screw, which passes through the nut D, and has its one end bearing in the jaw 12, and its other end bearing at B on the bed-plate A.

In Fig. 7 the dotted lines represent the shape in which the bearing part B of the bedplate A is cast. After the screw B has been placed in its bearings the lugs a a are bent over it, as shown by the full lines.

When it is desired to use the clamp, holes f f f are bored into any convenient board or bench. The pins E on the angle-plate E, and the pin D on the nut D, are inserted into the holesff, and the work to be clamped is then placed between the jaws. By turning the screw B with the handle 0 the bed plate A and screw B are caused to advance bodily and clamp the work, the nut D remaining stationary.

Having described my invention, what I claim as my own is- .1. The angle-plate E, having one or more pins, E, as specified.

2. The stationary nut D, with one or more pins, D,in combinationwith the screw B and sliding bed-plate A, constructed as and for the purpose specified.

In testimony that I claim the foregoing as my own I aflix my signature in the presence of two witnesses.

WM. HEOKERT.

Witnesses H. W. HUBBARD, E. W. WOODLEY. 

